Fix from He Shuang(shuang.he@intel.com),

  XvMCDestroyContext to check pointer valid

1 files changed, 2 insertions, 2 deletions

diff --git a/src/xvmc/intel_xvmc.c b/src/xvmc/intel_xvmc.c
index 8fabb35e..ea39069e 100644
--- a/src/xvmc/intel_xvmc.c
+++ b/src/xvmc/intel_xvmc.c
@@ -458,11 +458,11 @@ Status XvMCCreateContext(Display *display, XvPortID port,
 Status XvMCDestroyContext(Display *display, XvMCContext *context)
 {
     Status ret;
-    int screen = DefaultScreen(display);
+    int screen;
 
     if (!display || !context)
         return XvMCBadContext;
-
+    screen = DefaultScreen(display);
     ret = (xvmc_driver->destroy_context)(display, context);
     if (ret) {
 	XVMC_ERR("destroy context fail\n");